Have you had a change in your mental state or behavior? For example, you:Cannot express your thoughts clearly.Behave in an unusual, bizarre, or aggressive manner.Have trouble solving problems and performing simple tasks.Do not know where you are or you cannot recognize family members or familiar items.Express firmly held but false beliefs (delusions).See, hear, feel, smell, or taste things that are not really there (hallucinations or illusions).Believe that others want to harm you (paranoia).